Noise-induced organized slow fluctuations in networks of neural areas with interarea feed-forward excitation and inhibition
SCIE
SCOPUS
- Title
- Noise-induced organized slow fluctuations in networks of neural areas with interarea feed-forward excitation and inhibition
- Authors
- Dongmyeong Lee; Kim, S; Tae-Wook Ko
- Date Issued
- 2014-06-23
- Publisher
- AMERICAN PHYSICAL SOCIETY
- Abstract
- Slow coherent spontaneous fluctuations (< 0.1 Hz) in functional magnetic resonance imaging blood-oxygen-level-dependent signals have been observed for a resting state of the human brain. In this paper, considering feed-forward inhibition in addition to excitation between brain areas, which we assume to be in up (active) or down (quiescent) states, we propose a model for the generation and organization of the slow fluctuations. Connectivity with feed-forward excitation and inhibition between the areas makes the system have multiple stable states and organized slow fluctuations manifest as noise-induced slow transitions between the states. With various connectivities, we observe slow fluctuations and various organizations, including anticorrelated clusters, through numerical simulations.
- Keywords
- STATE FUNCTIONAL CONNECTIVITY; DEFAULT-MODE NETWORK; BRAINS DARK ENERGY; AWAKE RAT-BRAIN; STRUCTURAL CONNECTIVITY; CORTICAL ACTIVITY; RESTING BRAIN; ARCHITECTURE; CORTEX; DISEASE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13055
- DOI
- 10.1103/PHYSREVE.89.062710
- ISSN
- 1539-3755
- Article Type
- Article
- Citation
- PHYSICAL REVIEW E, vol. 89, no. 6, page. 62710 - 62710, 2014-06-23
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